powerpc: Fix _CPU_Counter_read() for MPC860

The mpc860 is a RTEMS-specific multilib define, see GCC "gcc/config/rs6000/rtems.h".
2018-09-14 13:20:05 +02:00
parent aaa6653b72
commit fe283f6c77
1 changed files with 2 additions and 0 deletions
--- a/cpukit/score/cpu/powerpc/include/rtems/score/cpu.h
+++ b/cpukit/score/cpu/powerpc/include/rtems/score/cpu.h
@@ -745,6 +745,8 @@ static inline CPU_Counter_ticks _CPU_Counter_read( void )
 #if defined(__PPC_CPU_E6500__)
  /* Use Alternate Time Base */
  __asm__ volatile( "mfspr %0, 526" : "=r" (value) );
+#elif defined(mpc860)
+  __asm__ volatile( "mftb %0" : "=r" (value) );
 #else
  __asm__ volatile( "mfspr %0, 268" : "=r" (value) );
 #endif